Carriage return mechanism for record making machines



Dec. 5, 1950 Filed Nov. 19, 1947 O. W. SWANSON CARRIAGE RETURN MECHANISMFOR RECORD MAKING MACHINES 5 Sheets-Sheet 1 I N V EN TOR. (gym/2 n4SWANSO/V ATTO R NEY Dec. 5, 1950 o. w. SWANSON I CARRIAGE RETURNMECHANISM FOR RECORD MAKING MACHINES 3 Sheets-Sheet 2 Filed Nov. 19,1947 W W J M W 0 ATTORN E Y Dec. 5, 1950 o. w. SWANSON CARRIAGE RETURNMECHANISM FOR RECORD MAKING MACHINES 3 Sheets-Sheet 3 Filed Nov. 19,1947 I E'NVENTOR did/1A W. SWANJfl/V Patented Dec. 5, 1950 CARRIAGERETURN MECHANISM FOR RECORD MAKING MACHINES Oscar W. Swanson, WestHartford, Conn., as-

signor to Underwood Corporation, New York, N. Y. a corporation ofDelaware Application November 19, 1947, Serial N0. 786,826

17 Claims.

This invention relates to record printing machines of the class having acarriage which is movable in one direction to shift the position of theprinting mechanism transversely of a work sheet and in the oppositedirection to return the printing mechanism to position for startinganother line.

The invention relates more particularly to power operated carriagereturn mechanism for such machines.

The principal objects of the present invention are to improve theconstruction and mode of operation of power operated carriage returnmechanisms for machines of the above class and to produce a novelmechanism which will operate in a reliable manner to return the carriagealternatively to any one of two or more returned positions.

Other objects of the invention are to provide a carriage returnmechanism for record printing machines, having a projectible stop forengagement with a co-operating arrester to arrest the return movement ofthe carriage, with novel and improved mechanism for projecting saidstop, with novel and improved mechanism for holding the stop inprojected position and with novel and improved mechanism for releasingthe stop.

to enable the same to be retracted to normal position.

Another object of the invention is to provide an improved power operatedcarriage return mechanism constructed to enable the carriage to bereturned to full return position or to one or more partial returnpositions and particularly adapted for use on typewriting machines ofthe so-called Elliott Fisher type in which the work is supported on afiat platen and the type mechanisms are mounted on a carriage which ismovable transversely across the machine and over the platen in onedirection to letter space and in the opposite direction to return thesame to position to start the next line of writing.

A still further object of the invention is to produce a carriage returnmechanism for typewriting machines of the Elliott Fisher type having acontrol mechanism by which the driving and stopping of the carriage maybe more easily and conveniently controlled than in prior carriage returnmechanism for machines of this particular type. 7

With the above and other objects in view, the invention consists in amachine embodying the novel and improved features, constructions andcombinations of parts hereinafter described and particularly pointed outin the claims, the

2 advantages of which will be readily understood by those skilled in theart.

The invention will be clearly understood from the accompanying drawingsillustrating the invention in its preferred form and the followingdetailed description of the construction therein shown.

In the drawings,

Fig. 1 is a perspective view illustrating certain parts of a typewritingmachine of the Elliott Fisher type embodying the invention.

Fig. 2 is a view in side elevation partly in section illustratin thetype carriage, the carriage return mechanism and certain devices forcontrolling said mechanism and the stopping of the return movement ofthe carriage,

Fig. 3 is a view similar to Fig. 2 illustrating certain of the parts indifferent positions,

Fig. 4 is a detail view in side elevation illustrating a portion of themechanism shown in Fig. 3, with certain of the parts removed to showmore clearly the structure, and

Fig. 5 is a detail view in side elevation illustrating one of thecarriage return keys and the associated key bar detached from themachine.

The invention is illustrated in this application as embodied in amachine having the same gen-' eral construction arrangement and mode ofoperation of parts as the machine disclosed in the patent to FoothorapNo. 1,904,127, dated April The machine illustrated in this application1s provided with a flat platen 2 mounted in a rectangular platen framecomprising a pair of parallel side bars 4 suitably supported on astandard,

not shown. A portion of each bar is toothed to form a rack 5 engageableby traction gears 6. fast on a shaft 8 extending transversely of theside bars and supported by bearings in brackets,

one of which is shown at It! projecting upwardly from the rear portionsof the side members of the rectangular line space frame l2. This shaftalso carries wheels l4 engaging tracks I6 formed on the side bars 4 andthe front rail I8 of the line space frame is likewise supported bywheels (not shown) engaging said tracks to enable the line space framereadily to move forwardly and rearwardly along said tracks.

The front and rear cross rails l8 and 20 support a key carriage 22,shown in dot-and-dash lines in Fig. 1 for travel across the platen 2 inletter spacing direction and return, on front and rear wheels 24.

The key carriage contains the customary key actions, ribbon mechanismand controls for the in letter spacing direction under control of, therescapement mechanism.

Power drive The key carriage 22 may be manually returned to theleft-hand margin from any point to which it has been advanced in letterspacing direction, but to relieve the operator of the work of returningthe carriage, a motor 3i? is provided, convenientlymounted on a casting(not shown) secured to and projecting rearwardly from the rear rail 20of the line space frame l2 with which it travels;

Referring to Fig. 2 of the drawings, power from the" motor is taken fromthe worm 32' fast on the motor shaft 34% and meshing with. a worm gear36 having, a friction clutch connection 38 with a countershaft itjournaled in the casting and extending'forwardly beneath a carriagereturn rack Msecured to the flanged rear end of an apron 44' projectingfrom the deck as of the key carriage 22.

A wide carriage return. pinion 43,.journaled on the forward endofthe'countershaft cc and axially movable along the shaft; meshes withthe teeth of the carriage return rack d2 at all times, the return pinionhaving a peripherally grooved collar 59' terminating at its rear end ina driven clutch member 52' normally disengaged from a driving clutchmember 54 fast on the countershaft.

The free end of a clutch shift finger 56 lies in the groove in thesliding" rotatable collar 55, thefinger being secured to a clutchshifting shaft 58 j'ournaled' in the motor support casting; A clutchshifting arm at on one end of the clutch shifting shaft 58 is providedwith a lateral locking lip 52 normally engaged by a locking latch64'pivoted on a trip shaft G6 extending across: the machine andsupported in bearings projecting from the back of the rear rail 2%! ofthe line space frame. A fan-shaped trip arm 58 secured to the trip shaftfit extends rearwardly between twostuds l9 and i2 projectingrespectively from the hooked latch Gd and from the clutch shiftingj arm56; a normally tensioned spring id connecting the two studs to form ayielding link therebetween and normally maintaining the hooked latch 6.4engaged with the clutch shifting arm' 60 to retain the clutch members 52and 54' disengaged.

Control of automatic carriage return mechanism Curved arms i6 projectingupwardly and forwardly from the trip shaft fit support a tripping ball18 toothed at its opposite ends and rocking with the shaft 66. Mountedon the right-hand end of the tripping bail is a cam block as (seeFig. 1) arranged to be engaged by a roll 82 projfecting downwardly fromthe carriage apron.

" In the normal position of the parts, the hooked latch 64 is engagedover the lip 62 of the clutch shifting arm 60, as shown in Fig. 2, thetrip shaft 68 is retained in its limiting counterclockwise position, andthe tripping bail I8 is retained in its rearmost position by the actionof the spring 14. As the carriage 22, traveling in letter spacingdirection, advances the printing point toward the extreme right-handmargin of the work sheet, the roll 82 wipes across the inclined face ofthe. cam" block 30' and rocks the bail forwardly thereby rocking thetrip shaft es in a clockwise direction, Fig. 2.

The rearwardly projecting trip arm 68 is swung upwardly by the rockingmovement of the trip shaft. 66; to disengage the hooked latch B l fromthe clutch shifting arm 6! and, in so doing, additiona'lly tensionsthespring M, which spring, acting'as-a tension link-,swings the arm 3%and rocks theclutch shifting shaft 58 and its clutch shifting. finger56. counterclockwise, Fig. 2, to slide the driven member 52 of thecarriage return clutch along the counter shaft to into engagement withthe driving member 54, the carriage returnpinion iiibeing of sufiicientwidth to maintainitsi engagement with thecarriage return-rack:

throughout the clutch shifting action.

The motor: as is preferably of. the constantly running typeand will thendrive the carriage. in contra-letter spacing direction. toward. theleft:- hand side of the machine. As the carriage approaches the end of.its return movement under the influence, of the motor 30,. the trippingball 78 is swung back rearwardly to its. normal. posi-- tion.. Duringthisoperation, the tripping arm 63 is pressed; against the stud, 1.2onthe clutch shift-- ing. arm 69 androcks; said arm together with. the;clutch shiftingv shaft 58 and clutch finger: 55 in a clockwise.direction, Fig.v 2,v to. cause the. finger to disengage the drivenclutch member 52 from the driving clutch; member 55, therebydisconnecting the motor at from the traveling carriage 22.,

The spring 14 tends to draw the hooked latch 64': downwardly, as thetripping arm. 68 is swung downwardly and, when the arm. E56, reaches acertain position, the latch snaps down over the lip. 62. on said arm tolock thev clutch shift mechanisnnandhence the clutch. members, in disen'gaged positions.

Allv of. the mechanisms. above described have substantially the. sameconstruction, arrange-- mentand. mode. of: operation as the;corresponding mechanisms of the machine illustrated and:

v described, in, the patent. to Oscar J. Sundstrand,

No..2,30l,.7:l6,,dated November 12, 1942,

The. mechanism for swinging the tripping bail 18. rearwardly as thecarriage. approaches they end. of its return movement will. behereinafter described- Partial. carriage return The present machine isprovided not only with mechanism for automatically returning thecarriage toposition to begin the typing of a line, but is alsoprovidedwith mechanism for stopping the carriage in fully returned position orin either of two partial return positions at different distances to theright of its fully returned position. In carrying out the invention,three carriage return keys are mounted on the key carriage. By therespective actuation of these keys the carriage return mechanism will bethrown into operation and the return movement of the carriage will becaused to be arrested with the carriage in any one of three differentreturn positions, the stop position being selected by the actuation ofthe appropriate key.

The keys controlling the return under power of the carriagefrom anyadvanced position to a absence:

selected precedent position are mounted'on the traveling carriage 22 andare arranged in a novel manner to enable the selection of any of severalprecedent positions to which the carriage may be returned. These threekeys are indicated respectively at 84, 86 and 88 and are mountedrespectively on vertically slidable key bars 90, 92 and 94. These keysare arranged to be independently depressed. The depression of each key,through intermediate mechanism, swings forwardly the tripping bail I8 toengage the driven member 52 of the carriage return clutch with thedriving member 54 of said clutch.

The mechanism for actuating the trippin bail to engage the carriagereturn clutch from the depression of any one of the keys comprises anarm 96 fixed to a horizontal rock shaft 98 journaled in bearings on thekey carriage frame, said arm depending through a slot in the apron 44 toa point in proximity to and behind the tripping bail I8. The shaft 98extends part way across the rear of the key carriage toward theleft-hand side thereof and, at its left-hand end, carries a radial armI00 secured to the shaft. Upon this arm is mounted a pin I02 arranged tobe engaged by the cam faces of the teeth I04 of a toothed cam wheel I06journaled on a pin or stud I08, supported at its inner end on a plateII8 secured to the side plate III of the key carriage. By the rotationof the cam wheel I06 in a clockwise direction, Fig. 2, the pin I02 isengaged by oneof the teeth of the cam wheel and the arm I60, the rockshaft 98 and the arm 96 are swung in a counterclockwise direction toswing forwardly the trip bail I8 to engage the carriage return clutch.

A one-tooth rotation is imparted to the cam wheel I86 by the depressionof any one of the three carriage return keys. The mechanism forimparting this rotation to the cam wheel comprises a longitudinallymovable bar or slide H2, the rear end of which is supported on a headedpin II'4 fixed to the supporting plate H0 and engaging in a slot II6formed in the rear portion of the bar. The forward end of the bar H2 issupported upon one arm of a bell crank IIB pivoted at I20 upon a screwstud also fixed in the supporting plate IIO. Upon the rear end portionof the bar H2 is pivoted at I22 a pawl I24 having an arm I26 formed witha downwardly extending tooth and arranged to engage the teeth of the camwheel I06. Pawl I24 is acted upon by a coil spring I28 which tensionsthe pawl in 'a direction to maintain the arm I26 constantly inengagement with the teeth of the cam wheel.

The bar II 2 is acted upon by coil spring I32 which tends to move thesame rearwardly. The movement of the bar rearwardly under the influenceof the spring I36 is limited by the engagement of the pin II4 with theforward end of the slot II6. Thus the sprin I38 maintains the barnormally in the position shown in Fig. 2, the arm I26 of the pawl I24then resting upon the outer end of one of the teeth of the cam wheelI06. The bar I I2 is moved forwardly to the position shown in Fig. 3 byswinging the bell crank lever I I8 in a clockwise direction. During theforward movement of the bar, a one-tooth rotation is imparted to the camwheel I06 by the action of the tooth on the arm I26 of the pawl I24 on atooth of the wheel. When the bar H2 is in normal re-'- tracted position,the pin I92 on the arm I86 is engaged between two of the teeth of thecam wheel I06, as clearly shown in Fig. 2. During this rotation of thecam wheel, the cam face of one of the teethengages the pin I02 andforces the same in a rearward direction. This swings the arm I00, therock shaft 98 and the arm 96 in a counterclockwise direction, therebyactuating the tripping bail T8 to ngage the carriage return clutch.

The bell crank lever H8 is swun in a clockwise direction to engage thecarriage return clutch by the depression of any one of the keys 84, 86and 86. The key bar 90 (see Figs. 2 and 5) is mounted for verticalsliding movement upon the side of the type carriage by means of pins orstuds I32 and I33 fixed at their inner ends in the plate II 0 andengaging in slots I34 and I36 in said bar. The key bar is normally heldin elevated position by means of a coil spring I38. The key bar isprovidedwith a lateral projection I46 arranged to engage a laterallybent flange I42 formed on the bell crank lever II8 to swing the bellcrank in a clockwise direction as the key bar is depressed.

The key bar 92 (see Figs. 2 and 3) is mounted to slide vertically uponthe side of the type carriage by means of the studs I32 and I33 whichengage in slots I44 and I49 in the key bar. This key bar is acted uponby a coil spring I48 which normally maintains the key bar in an elevatedposition. This key bar is provided with a lateral projection I53arranged to engage the laterally bent flange I42 on the bell crank leverII8 to swing the bell crank to engage the carriage return clutch uponthe depression of the key bar.

The key bar 94 (see Figs. 2 and 4) is mounted to slide vertically on theside of the type head by means of the studs I32 and I33 which engagerespectively in slots I52 and I54 in the key bar. This key bar is actedupon by coil spring I55 which normally maintains the bar in elevatedposition. The key bar is provided with a lateral projection I571arranged to engage the laterally bent flange I42 on the bell crank leverII8 to swing said lever in a clockwise direction upon the depression ofthe key bar to engage the carriage return clutch.

Upon the depression of the key 84, the carriage is given a full returnmovement and is arrested in its limiting left-hand position. Thecarriage is arrested in different returned positions, each short of acomplete return to the left-hand mar ginal position, following thedepression of either of the keys 86 or 88. a

When the bar H2 is moved to the right by the depression'of one of thekeys, it is latched in its right-hand position by a suitable latchmechanism. The latch is actuated to release the bar as the type carriageapproaches the end of its re-' turn movement. The bar is then movedrearwardly to its normal position by the action of the spring I36.During this rearward movement of the bar, the inclined rear face of thearm I26 engages the cam face of the tooth I04 of the Wheel I66immediately to the rear of said arm and the arm rides over the tooth andfinally drops down to the position shown in Fig. 2 with the tooth on thearm located to the rear of the tooth on the wheel, as shown in Fig, 2.

The mechanism for arresting the return movement of the carriage with thecarriage in full return position or in either of two partial returnpositions comprises a verticaliy movable check stop I56 mounted on thecarriage and arranged to engage any one of a series of arresters mountedon the draft rod I58. The check stop I56 is formed at the lower endof aslide I60 mounted for vertical sliding movement on the supporting plateHi and on the downwardly extending portion of an an le bracket It!secured to the lower left-hand corner of the type head. To provide forthis sliding movement, the upper end of the slide I66 is formed with aslot I62 in which engages a headed stud I64 fixed to the plate H8. Thecheck stop is held in position with relation to the bracket, lfil bymeans of a guide plate 65, the inner face of which is vertically groovedto accommodate slidingly a laterally extended portion of the stop,

The mechanism co-operating with the check stop R58 to arrest the returnmovement of the carriage has substantially the same construction,arrangement and mode of operation as the corresponding mechanismillustrated and described in the patent to Sundstrand No. 2,283,401,dated May 19, 1942. Said mechanism comprises the draft rod E58 extendingtransversely of the line space frame. This rod is T-shaped incrosssection and is arranged to slide in a channel formed by the rearrail 23 of the line space frame, the web 1&8 projecting forwardlytherefrom and the carriage escapement rack l'le being secured to theforward edge of said web. The, left-hand end portion of the draft rodI58 is toothed for a considerable distance and arresters 112, I74 and[76 of different heights are adjustably arranged on the draft rod to beengaged by the check stop I56 to arrest the carriage during its returnmovement at any one of three precedent positions and also to effect aline-spacing operation incident to its return to any such precedentposition. Arrester H2 of least height is located farthest to the right,and arresters il and I76 of successively greater heights are mounted onthe draft rod in corresponding order to the left of the arrester H2.These arresters preferably have substantially the constructionillustrated and described in said Patent No. 2,283,401 to enable them tobe readily adjusted longitudinally on the draft rod.

The left-hand end of the draft rod 158 passes through an aperture in arearwardly turned slotted projection lid on the left-hand end of a slideI89 extending therefrom toward the right along the front face of thecarriage escapement rack N53 to which the slide is connected by headedfastenings i82 engaging in slots $4 in the slide. The slide operates toguide the draft rod in its endwise travel and prevents it from cantingin its channel.

The draft rod is provided at its right-hand end with a threaded portionI86 passing through a block [33 secured to the forward face of thearresting plate E93, the draft rod being fixed in said block by means ofnuts [92 threaded on the rod and located upon opposite sides of theblock. The arresting plate I99 is provided with parallel slots 19 andI96 in which engage respectively supporting and guiding members Hi8 and269 extending from the line space frame to support and guide the plate.

The arresting plate I86 is formed with a beak 282 which projects towardthe left from the upper left-hand edge of the plate into position tocollide with a forwardly extending fixed stop 294 (Fig, l) rigidlysecured to the right-hand end of the rear rail 20.

A coiled spring 286 attached at one end to the fixed stop and connectedat its opposite end to the draft rod. 658 yieldingly retains thearresting plate let, the draft rod and the slide I80 at their right-handlimits of travel as determined by contact of the left end wall of theslot I94.

8.. in the arresting plate with the guide member 198.

When-the opfi fatonat any point in the advance of the carriage, desiresto return the carriage to its limiting left-hand position or to give afull return movement to the carriage, he depresses the key 84 and thekey bar 99 to their limiting positions determined by the engagement ofthe pin 133 with the upper end of the slot I38. During the downwardmovement of the key bar; the bell crank M8, bar H2, pawl I24, toothedwheel Hi6; pin :82, arm [90, shaft 98 and arm 98 are actuated to swingforwardly the carriage return bail i8 and thereby engage the carriagereturn clutch to initiate the return movement of the carriage. Afterbeing actuated by the key lever, the parts of the clutch engagingmechanism between the arm 96 and the clutch are maintained in positionuntil the carriage approaches the end of its return movement. The checkstop 5% is not depressed by this operation but remains in its uppermostposition.

During the return movement of the carriage, the check stop 5% passesover the graduated arresters H2 and iii; and finally engages the highestarrester N6, the location of which on the draft rod determines thebeginning of a line of writing.

The check stop E56, when in its elevated position, will clear thearresters H2 and 174 during the return movement of the carriage and willengage the arrester lit to stop the carriage in full return position.The check stop is depressed to one predetermined position such that itwill clear the arrester W2 and will engage the arrester I14 during thereturn movement of the carriage by the depression of the key 86. Thecheck stop is depressed to another predetermined position such that itwill engage the arrester H2 during the return movement of the carriageby the depression of the key 88.

The mechanism for depressing the check stop comprises a bell crank lever2E8 pivoted on a stud 2 I Q fixedat its inner end in the supportingplate lid. The lever 288 is formed with a slot H2 in the rearwardlyextending arm thereof in which engages a headed pin 2M secured in theslide Hit. The upwardly extending arm of the bell crank lever 283 isconnected by a link 2H5 with a lever 21s pivoted at 22%? on thesupporting plate 5 Hi. The link 2 i6 is acted upon by a coil spring 23!which tends constantly to move the link and the lever 2E8 forwardly.This lever carries a roller 222 arranged to be engaged by the rear edgeof a plate 225 adjustably pivoted at 226 on the key bar Q2 and held inadjusted position by means of a screw 2Z8 engaging in a slot 230 in theplate and threaded into the key bar. The plate 224 is formed with a camface 232 arranged to engage the roller 222 during the first part of thedownward movement of the key bar and with a face 23d substantiallyparallel with the direction of movement of the key bar which engages theroller 222 during the latter part of the downward movement of the bar.

As the key bar 92 is moved downwardly by the depression of the key 86,the lever 218 is swung. about its pivot 2213, in a clockwise direction,by the engagement of the cam face 232 with they roller 222 to actuatethe bell crank lever 208 to depress the slide I89 and the check stop toa position in which the check stop will pass over the arrester H2 andwill engage the arrester 114 during the return movement of the carriage.

' When the check stop has been projected into ass rts position to engagethe arrester I14, the stop is held in projected position while the key86 and key bar 92 are depressed by the engagement of the roll 222 withthe edge face 234 of the plate 224.

The rear edge of the key bar 94 is also arranged to engage the roller222 on the lever 2E8.- In order to depress the check stop by thedownward movement of the key bar 94, the bar is formed with a cam face236 (see Fig. 4) arranged to engage the roller 222 during the early partof the downward movement of the key bar from elevated position. The keybar 96 is also formed with a face 238substantially parallel with thedirection of movement of the bar which is engaged with the roller 222during the latter part of the down ward movement of the key bar.

By the depression of the key 38 and key bar 94, the lever H8 is actuatedthrough the cam face 236 to project the slide I60 and check stop I56downwardly to a position in which the stop engages the arrester I12during the return movement of the carriage.

- When the check stop has been projected into position to engage thearrester 112, the stop is held in projected position while the key 88and key bar at are depressed by the engagement of the roll 222 with theedge face 238 of the key bar.

It is highly desirable that mechanism should be provided for holding thecheck stop I56 in either of the positions into which it is projectedrespectively by the depression of the keys 86 and 88 after a depressionand release of either of said keys. Otherwise, it would be necessary forthe operator to maintain each of these keys in de pressed positionduring the return of the carriage to stop the carriage in the desiredpartial return position. In the present machine, this result is securedby providing mechanism for holding each of the key bars 92 and 94 indepressed position following its depression substantially until thecompletion of the return of the carriage. The mechanism for holding downthese key bars also operates, after the depression of key 84, to holddown the key bar 92 during the return of the carriage although this keybar does not control the check stop. The mechanism for holding down theseveral key bars and corresponding keys, during the return of thecarriage, is operated to release the keys bars at the end of thecarriage return movement.

The mechanism for holding down the key bars when depressed respectivelycomprises a projection or locking lug 240 formed on the forward end ofthe longitudinally movable bar H2.

The key bars 90, 92 and 94 are formed respectively with laterallyprojecting locking lugs 242, I

244 and 246 for co-operating with the lug 24!}. When a key bar isdepressed thereby actuating the bell crank H8 to move the bar H2longitudinally forward or to the right, Figs. 2 and 3, the correspondinglocking lug 242, 244 or 246 extending laterally from the bar isdepressed below the projection 24!) and said projectio is movedforwardly above said locking lug as shown in Fig. 3 by the forwardmovement of bar H2. The key bar thus will be held down by the engagementof the locking lug on the bar I I2 with the projection 245 as long asthe bar I I2 remains in forward position. The locking of the key bars 92and 94 in depressed position will also lock the. check stop, which iscontrolled by said key bars, in depressed position.

The forward movement of the bar H2. which locates the projection 240above the laterally extending locking lug on the depressed key bar,"

also locates said projection below the corresponding locking lug on theother two key bars. These key bars therefore are then locked againstdepression while the bar I I2 remains in its forward position.

The bar I 52 is held in its forward position, following the depressionof a key bar, during the return of. the carriage until the tripping bailI8 is swung back rearwardly to disengage the carriage return clutch. Thebar H2 is released at this time and allowed to move back to its rearposithan under the influence of spring I30.

The disconnection of the motor from the carriage is automaticallyeffected, regardless of the extent of return travel of the carriage, bya mechanism adapted to function just prior to the arrest" of thecarriage at any of its completely or partially returned stations. Thesaid mechanism comprises a floating thrust bar 248 slidably supportedadjacent its left-hand end in an eye 255 formed in a bracket secured toand projecting from the adjacent vertical bracket It on the line spaceframe. right-hand end as at 252 to ride on the rear end of a stud 254projecting rearwardly from and travelling with the arresting plate I95.The lefthand end of the thrust bar is arranged to engage an inclined camface on a member 256 secured to the right-hand end of the trip bail 18in the path of travel of the thrust bar.

The length 01' the slot 252 in the thrust bar is less than the distancenormally between the beak 202 and the fixed stop 264. Therefore, as

the arresting plate IQil is drawn to the left by contact of the checkstop I56 with one of the arresters I72, I14 or I16, the supporting stud254 will travel idly along the slot 252 of the thrust bar until shortlyprior to the arrest of the plate I92 by contact of the beak 202 with thestop 204, the supporting stud 254 reaches the left end wall of the slot252. Thereafter, the continued movement of the arresting plate I shiftsthe thrust K rod to the left against the inclined face of the contactmember 256 On the trip bail and rocks the trip bail back to its normalposition, thereby disconnecting the shiftable driven clutch member ofthe carriage return clutch from the driving clutch member.

When the bar I I2 is located in its normal or rear position, the upperedge of the latch is held in-. engagement with a laterally bentprojection 252 5 formed on the bar, as shown in Fig, 2. When the bar H2is moved forwardly upon the depression of one of. the key bars, thelatch is swung up-- I wardly behind the projection 262 to latch the barin forward position, the upward movement of the latch then being limitedby the engagement of an arm 26E extending rearwardly from the body ofthe latch with the pin I52.

rearward movement of the bail then swings the arm 96, the shaft 98 andthe arm III in a clock.-

The thrust bar is slotted at its The latch holds the bar H2 in forwardposition until the tripping bail I8 is swung rearwardly to disengage thecarriage return clutch, as above stated. The

wise direction. During this clockwise swinging movement of the arm !00,the pin I62 on said arm engages a cam-shaped edge portion 255 formed onthe arm 266 and swings the latch in a clockwise direction about the studI66, thereby disengaging the forward end of the latch from behind theprojection 262 on the bar H2. The bar is then moved back to its rearwardposition by the action of the spring I30.

Thus following the depression of one of the key bars, the bar I I2 isheld in forward position and the key bar and the check Stop I56 are heldin depressed positions during the return of the carriage until the checkstop has engaged one of the arresters I72, I74, I16 and the draft rodI58 has been moved some distance to the left, Fig. 1. The leftwardmovement of the draft rod moves the stop plate I90 to the left and,during the lat ter part of the movement of said plate, the plate picksup the thrust bar 248 and said bar is actuated to engage the inclinedface on the contact member 2'56 to swing back the carriage return ortripping bail 18.

The parts of the present mechanism are constructed and arranged so that,when the latch 258 is in its upper or latching position and the carriagereturn bail is in forward position, the latch is actuated to disengagethe projection 262 on the bar H2 and thereby release said bar forrearward movement to unlock the depressed key during the latter part ofthe rearward movement of the bail by which the carriage return clutch isdisengaged. As shown in Fig. 3, the bail I8 is located in spacedrelation to the arm 96 when the carriage return clutch is engaged andthe latch is in its upper position. After the latch is thrown out, theupward movement of the slide I60 is delayed until after the first partof the upward movement of the depressed; key bar by the engagement ofthe edge of the key bar substantially parallel with the direction ofmovement of said bar with the roller 222. These features of the presentmechanism are provided to prevent the projectible stop from beingelevated out of engagement with the arrester until the return movementof the carriage is completely arrested.- W v Normally, after the arrestof the return moves merit of the carriage, the slide I60 will be movedupwardly by the action of the spring 23 I on the link 2I6 and thebellcrank 208 to elevate the projectible stop I56. In the event that thefricnon between the check stop and the arres'ter prevents the elevationof the slide I60 upon the arrest of the return movement of the carriage,the friction between these parts will be relieved sufil'ciently' toallow the slide I60 to be actuated to elevate the check stop upon themovement of the carriage for a relatively slight distance inletter-spacing direction.

It is to be understood that the construction shown and described in thisapplication is merely illustrative of the invention and that the severalfeatures thereof, except a defined in the claims, are not limited to theparticular construction and arrangement of parts of the illustratedembodi-- ment of the invention butthat the invention may be embodied inother forms within the scope of the claims. I

Having explained the nature and object of the invention and havingspecifically described a ma chine embodying the various features of thein'-' vention, in their preferred forms, what is claimed is:

1 a record making machine;- a transversely movable carriage,mechanismfor moving-the-car riage in one direction during a recordmaking operation, power mechanism for imparting re turn movements to thecarriage, two or more independently operable manipulative devices forrendering operative said power mechanism, means common to all saiddevices and movable thereby for retaining an operated one of saiddevices in actuated position during the return of the carriage and meansoperated by said car riage for releasing automatically said devices.

2. In a record making machine, a transversely movable carriage,mechanism for moving the carriage in one direction during a, recordmaking operation, power mechanism for imparting return movements to thecarriage, two or more independently operable manipulative devices forrendering operative said power mechanism, means common to all saiddevices and movable thereby into a position for retaining an operatedone of said devices in actuated position during the return of thecarriage, latching means for said retaining means, and means operated bysaid carriage adjacent the end of the carriage return movement forreleasing said latching means.

3. A record making machine comprising a carriage, means for moving thecarriage transversely of the machine during the making of a record,power mechanism for imparting return movements to the carriage, stoppingmeans for arresting the return movement of the carriage in differentreturned positions, two or more independently operable manipulatvedevices for controlling said stopping means to arrest the carriageselectively in any one of the diiferent returned positions, means commonto said devices for retaining an operated one of said devices inactuated position during the return of the carriage and means forreleasing automatically said devices.

4. A record making machine comprising a carriage, means for moving thecarriage transversely of the machine during the making of a record,power mechanism for imparting return movements to the carriage, stoppingmeans for arresting the return movement of the carriage in differentreturned positions,- two or more inde pendently operable manipulativedevices for controlling said stopping means to arrest the carriageselectively in any one of the different re,- turned positions, meanscommon to said devices and moved thereby for retaining an operated oneof said devices in actuated position during the return of the carriage,latching means for said retaining means and mechanism for throwing outof action said latching means to release said re taining means and saiddevice adjacent the end of the carriage return movement.

5. In a record making machine, a carriage movable in opposite directionsacross the machine, means for moving the carriage across the machine inone direction during a record mak-' ing operation, power mechanism forimparting return movements to the carriage, stopping means for arrestingthe return movement of the carriage, a first manipulative device, asecond manipulative device, means common to both said devices andoperable thereby for causing the power mechanism to return the carriageand for controlling the stopping means to stop the carriagesubstantially in one or the other of two predetermined positions,mechanism for retaining each of said devices and said common means,after being actuated, in actuated position during the return of thecarriage and means for releasing automatically said devices and saidcommon means.-

6. 111 a record making n-i-achine, a, carriage movable in advance andreturn directions transversely of the machine, means-for moving thecarriage transversely of the machine in one direction during a recordmaking operation, power mechanism for imparting return movements to thecarriage, stopping means for arresting the return movement of thecarriage, a manipulative device means operable thereby for causingthepower mechanism to return the carriage and for controlling the stoppingmeans to stop the carriage substantially in a predetermined position, asecond manipulative device engageable with said operable means forcausing the power mechanism to return the carriage and for controllingthe stopping means to stop the carriage substantially in anotherpredetermined position, mechanism for retaining each of said devices andsaid operable means, following their actuation,in actuated positionduring the return of the carriage, and means for releasing automaticallysaid retained devices and means adjacent the end of thecarriage returnmovement.

7. A record making machine comprising a carriage movable transverselyacross the machine, means for moving the carriage in one directionduring a record making operation, power operated mechanism for returningthe carriage comprising engageable and disengageable drivingconnections, a bail extending in a direction transversely of the machineand fixed in said direction, mechanism operated by the bail for engagingand disengaging said connections, means comprising a rotatable toothedcam wheel for shifting said bail, manipulative means and mechanismoperated by said manipulative means for rotating the cam wheel.

8. In a record making machine, a transversely movable carriage,mechanism for moving said carriage across the machine in one directionduring a record making operation, power actuated mechanism, normallydisconnected from the carriage, for moving the carriage in the oppositedirection to return the same, manipulative means, a rotatablemulti-toothed cam wheel, mechanism driven by said manipulative meansupon each manipulation thereof for rotating said cam wheel one toothspace, and means operated by said toothed cam wheel for connecting saidpower actuated mechanism with said carriage.

9. A record making machine comprising a carriage mounted for movementacross the machine, mechanism for advancing the carriage during a recordmaking operation, mechanism driven by power and normally disconnectedfrom the carriage for returning the carriage, a plura'ity ofmanipulative devices, a rotatable multi-toothed cam wheel, mechanismdriven by each of said devices upon manipulation thereof for rotatingthe cam wheel one tooth space, and means operated by said toothed camwheel for connecting said power driven mechanism with said carriage,

10. In a record making machine, a carriage movable in oppositedirections across the machine, means for moving the carriage in onedirection during a record making operation, power driven mechanism forimparting return movements to the carriage, means for connecting thecarriage with said power driven mechanism including a, rotatable toothedcam wheel, a pawl for rotating said wheel, a manipulative device andmeans operated by each actuation of said device to move the pawl toimpart a partial rotation to said cam wheel.

11. A record making machine comprising a 14 carriage movabletransversely across the machine, means for moving the carriage in onedirection during a record making operation, power mechanism forreturning the carriage in the opposite direction, mechanism forconnecting the carriage with the power mechanism including a rotatabletoothed cam wheel, a pawl for actuating the wheel, a support movable inopposite directions upon which said pawl is movably mounted, manuallycontrolled means and mechanism operated by the latter means for shiftingsaid support to cause the pawl to impart a partial rotation to thewheel. I

12. A record making machine comprising a carriage mounted for movementacross the machine, means for moving the carriage in one directionduring a record making operation, power mechanism for returning thecarriage comprising engageable and disengageable driving connections, abail, mechanism operated by the bail for engaging and disengaging saidconnections, means comprising a rotatable toothed cam wheel for shiftingsaid bail, a slide, a pawl movably mounted on the slide for engagingsaid wheel, a, manipulative device, means operated by said device formoving the slide in one direction to cause the pawl to impart a partialrotation to said wheel, a latch for holding the slide in operatedposition and means operated by the bail for disengaging the latch.

13. In a record making machine, a carriage, means for moving thecarriage in one direction across the machine in the making of a record,power mechanism for imparting return movements to the carriage,mechanism for arresting the return movements of the carriage, means forcontrolling said carriage return and arresting mechanisms comprising aseries of manipulative devices, a locking device for locking each ofsaid manipulative devices, following its actuation, in actuated positionduring the return of the carriage, a latch for retaining said lockingdevice in locking position and means for automatically relea-sing thelatch.

14. In a record making machine, a carriage, means for moving thecarriage in one direction across the machine in the making of a record,power mechanism for imparting return movements to the carriage,mechanism for arresting the return movements of the carriage, means forcontrolling said carriage return and arresting mechanisms comprising aseries of manipulative devices, a locking device for locking each ofsaid manipulative devices, following its operation, in operated positionduring the return of the carriage, a latch for retaining said lockingdevice in locking position and means for automatically releasing thelatch adjacent the end of the return movement of the carriage.

15. In a record making machine, a carriage movable in advance and returndirections transversely of the machine, mechanism for moving thecarriage across the machine in one direction during a record makingoperation, power mechanism for imparting return movements to thecarriage, stopping means for arresting the return movement of thecarriage comprising a projectible stop, a manipulative device andconnections for projecting the stop, means for locking the device andthereby the stop in actuated position, mechanism operated by theactuation of said device for moving the locking means into lockingposition, a latch for holding the locking means in locking positionduring the return of the caremanate riage and means for automaticanythrowing out the laltch.

16. Ina'r'ecord'makin'g machine, a transversely movable carriage,mechanism for moving the carriage'across the machine in one direction,power operated mechanism for imparting return moi/ein'ent's to thecarriage, mechanism for arresting the return movements or the carriagecomprising a projectible stop, manipulative devices anaconnec'tion'srespectively for "projecting the stop to different stopping positions,means for locking each of said devices and thereby the stop in actuatedposition during the return of the carriage, mechanism oiie'rated byeachof said devices for m'diiin'g the locking "means into locking position,'h-latch for holding the locking means "in looking position during thereturn of the carriage and means for automatically Tendering inactivethe Ia'tich.

17. In a, "record making machine, a carriage movable "in bpposi'tedirections 'across the machine, means for moving the carriage across themachine in one direction during a record making operation, powermechanism for imparting return movements to the carriage, stopping meansfor arresting the return movement of the car- 16 ria'ge at 'apredet'eri'nine'cilfosi'tiori,n, manipulative device, con ne'c'tionsoperated by said mahipul'a tive device forcaus'ing the power mechanismto return the 'c'a rriage, a second manipulative device for operatingsa'id connections -for causing the power menzinism to retiirn thecarriage and for controlling the stopping means to stop the carriag'e's'iib's'tantially ina different predetermined position, mechanism "forretaining each of "said devices and said connections, after beingactua'tedfln'actualted positiondurin'g the return of the carriage, kindmeans operated by said stopping mechanism for releasing automaticallysaid retaining mechanism.

OSCAR W. SWANSON.

REFERENCES CETED "rue rohowing 'feferehc'es of record in the fife of"this bait-ant:

UNI-FED STATES PATENTS Number Name Date 1,164,630 parlm Dec. 31, 19152,233,949 Kurows'ki -QMeJr. 4, 1941 2,'2 58,;'7f1 5 Eitma'n Oct. 14,1941 2,333356'6 Helmond Nov. 2, 1943

